Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-04T17:58:23.570Z Has data issue: false hasContentIssue false
  • English
  • Français

APOGEE Chemical Anomalies discovered everywhere in the Milky Way: Giant stars with GC-like abundance patterns

Published online by Cambridge University Press:  02 August 2018

J. G. Fernández-Trincado
J. G. Fernández-Trincado*
Affiliation:
Departamento de AstronomíaDepartamento de Astronomía, Universidad de Concepción, Casilla 160-C, Concepción, Chile email: [email protected] and/or [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We report the discovery by APOGEE of five mildly metal-poor ([Fe/H] >−1) anomalous giant stars in the halo/disk/bulge Galaxy with abundances of C, N, and Al that are typically found in globular cluster stars (GCs, see e.g. Carretta et al. 2009a; Mészáros et al. 2015; Pancino et al. 2017; Schiavon et al. 2017a; Tang et al. 2017) and in the inner Galaxy (e.g., Schiavon et al. 2017b; Recio-Blanco et al. 2017) simultaneously with atypical abundances of Mg (Mg-poor: [Mg/Fe] < 0) never before seen in Milky Way (MW) GCs, dwarf galaxies (see Hasselquist et al. 2017) neither in MW field stars. Additionally, four new moderately metal-poor ([Fe/H] <−1) anomalous giant stars (i.e., N-rich, Al-rich and C-poor) with trustly GCs second-generation like chemical patterns were identified within the Galactic bulge, halo and disk field.

Keywords

Galaxy: structurestars: abundancesstars: Population IIglobular clusters: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S334: Rediscovering our Galaxy , July 2017 , pp. 285 - 287
Copyright
Copyright © International Astronomical Union 2018 

References

Anguiano, B., De Silva, G. M., Freeman, K., Da Costa, G. S., et al. 2016, MNRAS, 457, 2078Google Scholar
Carretta, E., Bragaglia, A., Gratton, R., & Lucatello, S., 2009a, A&A, 505, 139Google Scholar
Cunha, K., Verne, V. S., Hasselquist, S., et al., 2017, ApJ, 844, 145Google Scholar
Fernández Trincado, J. G., Vivas, A. K., Mateu, C. E., & Zinn, R., 2013, MemSAI, 84, 265Google Scholar
Fernández-Trincado, J. G., Vivas, A. K., Mateu, C. E., et al. 2015a, A&A, 574, A15Google Scholar
Fernández-Trincado, J. G., Robin, A. C., Vieira, K., et al. 2015b, A&A, 583, A76Google Scholar
Fernández-Trincado, J. G., Robin, A. C., Moreno, E., et al. 2016a, ApJ, 833, 132Google Scholar
Fernández-Trincado, J. G., Robin, A. C., Reylé, C., et al. 2016b, MNRAS, 461, 1404Google Scholar
Fernández-Trincado, J. G., Zamora, O., Garcia-Hernandez, D. A., et al. 2017, ArXiv e-prints, arXiv:1707.03108Google Scholar
Hasselquist, S., Shetrone, M., Cunha, K., et al. 2016, ApJ, 833, 81Google Scholar
Hasselquist, S., Shetrone, M., Smith, V., et al. 2017, ArXive-prints, arXiv:1707.03456Google Scholar
Mucciarelli, A., Bellazzini, M., Ibata, R., et al. 2012, MNRAS, 426, 2889Google Scholar
Pancino, E., Romano, D., Tang, B., et al. 2017, A&A, 601, A112Google Scholar
Pereira, C. B., Smith, V. V., Drake, N. A., et al. 2017, MNRAS, 469, 774Google Scholar
Recio-Blanco, A., Rojas-Arriagada, A., de Laverny, P., et al. 2017, A&A, 602, L14Google Scholar
Schaerer, D. & Charbonnel, C., 2011, MNRAS, 413, 2297Google Scholar
Schiavon, R. P., Johnson, J. A., Frinchaboy, P. M., et al. 2017a, MNRAS, 466, 1010Google Scholar
Schiavon, R. P., Zamora, O., Carrera, R., et al. 2017b, MNRAS, 465, 501Google Scholar
SDSS Collaboration, Albareti, F. D., Allende Prieto, C., et al. 2016, ArXiv e-prints, arXiv:1608.02013Google Scholar
Tang, B., Cohen, R. E., Geisler, D., et al. 2017, MNRAS, 465, 19Google Scholar